Problem with x-ray mode
Just click off the solid view, whilst in x-ray etc.  If you have wireframe mode on instead it should be fine. Hold z-select wireframe, hope it helps. It just happens with solid view.

You seem to not have overlays turned on in the mode you want, in any view etc.
I tried it, and it shows the same without overlays. I assume it is wireframe-mode turned on in the overlays above icon, that creates the shading you dislike. Turn it off. Then try changing views.